Bolt fob doobs



WILLIAM WHEELER, 0E TROY, NEW YORK.

BOLT FOR DOORS.

Specification of Letters Patent No. 5,338, dated October 23, 184'?.

To all whom t may concern:

Be itd knoWn that I, WILLIAM WHEELER, of the city of Troy, in the countyof Rensselaer and State of NeW York, have invented a neW and usefulimprovement in the manner of constructing bolts for doors, said boltsbeing so made as to constitute a new manufacture; and I do herebydeclare that the following is a full and exact description` thereof.

Bolts for doors have been made With flat plates of Wrought iron, havingstaples, or loops riveted in them to receive and guide the sliding bar,or bolt proper, the plate and its loops, or staples, together With4r astop piece usually consisting of four pieces. In my improved manner ofmanufacturing bolts one single piece of sheet metal is substituted forthe Whole number of pieces heretofore required in the manufacturing ofbolts of Wrought metal, irrespective of the sliding bolt itself. Therehave also been manufactured door bolts of cast iron in Which the plate,and loops, or staples, consisted of one piece, but these bolts areobjectionable on account of the brittle nature of the material, and ofthe Weight of metal required to give to them that strength Without Whichthey Would be useless; and besides this, they cannot be afforded Whenbrought into market at less than thirty per cent advance upon the priceofthe very superior article of sheet metal manufactured Although I donot make any claim Whatever to the machinery by means of'Which my boltsare manufactured, as this is a mere modification of such as is vWellknoWn to machinists, I Will describe the operation so far as may beuseful in guiding the Workman in the most ready mode of procedure.

I take sheet iron or other -malleable plates of metal, and cut it intopieces of suitable length` and Width; for an eight inch bolt these Willbe eight inches long, and about fourinches Wide. By means of avsuitablepress then perforate these plates in the manner represented in Figure l,of the'accompanying draWing; the holes a, a, being those that are toreceive l.the screWs by Which the bolt is to be'attached to the door,and

the H formed opening b, I), that Which is` tok admit the shank of theknob by Which thebolt is to be moved back and forth, and Which openingis also to serve as stops thereto. Theplate is then bent by means of apress and suitable dies into the form represented .in Fig. 2, andsubsequently intothat represented in Fig. 8. In performing this lasto-perationlan iron bolt a trifle larger than that Which isl toconstitute the sliding bolt isinserted along the part Which lis toreceive said bolt, and the plate is then nished. One hand can form sixtydozen such plates in a day. The staple Which is to be fastened to thedoor frame, its made of sheet` Jietal bent in like manner, as shoWn inIn' F ig. 5 my improved bolt isshoWn in its ,finished state. i

Having thus fully described thenature of my new manufacture of boltsfor. doors, What I claim as neW therein, and desire to secure by LettersPatent, isi The making the Whole of the instrument, With the exceptionof the sliding bolt itself, and the staple that is to be fastened to thedoor frame, of one piece of malleable metal,

by bending the` same, and by making a perforation therein to receive,andv to allo-W of the play of the knob, asherein set forth,

WILLIAM WHEELER.

